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Thread: Climate control not working at all

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    Default Climate control not working at all

    Hi

    New here... hello!

    I don't have a Vectra, my dad does so posting this on his behalf. He has a problem with the climate control on his Vectra Elite. Quite simply the fan does not work at all, on any speed. And if I remember correctly when you press the A/C button it does nothing, no light.

    I have checked the fuses / relays etc all ok. Also did an ECU reset by disconnecting the battery for a while.

    I did a bit of searching on here and there seems to be a fairly common fault with the interior fan only working on certain speeds. Do you think this could be the same issue (i.e. water ingress damaging the circuit board)?

    Is there some sort of guide available on how to get to the fan and control board?

    Thanks in advance,
    Iain.

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    It's a 7 speed by the way...

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    Regular Member Big Sig's Avatar
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    It could be but it could be the CC board itself as mine started to fail and I had it replaced under warranty.

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    Check to see if the bung hole located under the windscreen scuttle is blocked, hence letting in water which may have damaged the fan/heater electrics. The bung hole is located near the pollen filter.

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    Quote Originally Posted by Big Sig View Post
    It could be but it could be the CC board itself as mine started to fail and I had it replaced under warranty.
    Is that attached to the fan? Bet its expensive


    Quote Originally Posted by Jezzy View Post
    Check to see if the bung hole located under the windscreen scuttle is blocked, hence letting in water which may have damaged the fan/heater electrics. The bung hole is located near the pollen filter.
    Ok will take a look, don't mind a bit of DIY so we'll see if it's anything obvious! Thanks for your help.

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    check the heater resistor pack for water damage. I had the panel with the controls on replaced, no idea on the cost

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    Ok just an update. I checked the drainage hole which looked quite clogged so I cleared that out.

    I removed the pollen filter and check the fan which I could spin freely.

    Then I removed the glove box. No sign of any water damage at all. Cant find any resister - is there one for this model? Could only see a bunch of solenoids.

    Removed the two relays, tested those ok.

    Is there a way of checking the fan? There are 4 wires going to it.

    Cheers!

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    Regular Member macdad's Avatar
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    If the fan doe'nt work on all four settings mate,it's odds on its the fan motor itself thats goosed,the fan resister pack controls the speed of the fan,and if that is knackered the fan will still run on setting 4...hard wire the motor itself and see if it does actually work....Hope this helps.

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    Vehicle : Vectra

    Trim : SRi

    Engine : 150

    Year : 05

    Mileage : 74000

    Default

    climate control has 7 settings and i dont think it has a resistor pack in the usual place.

    FI23 (fuse box left hand side of dash with door open 40amp) is the main power feed for it.
    The regulator for it appears not to in the standard aircon position but further up to the left near the door pillar. Looks like a glovebox out jobbie to see it.

    FI2 (7.5amp) is the power feed to the aircon switch unit, does this work and show which speed its trying to work at on the display screen?
    Plasma's Tech2 services are now open and able to provide services

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    Quote Originally Posted by macdad View Post
    If the fan doe'nt work on all four settings mate,it's odds on its the fan motor itself thats goosed,the fan resister pack controls the speed of the fan,and if that is knackered the fan will still run on setting 4...hard wire the motor itself and see if it does actually work....Hope this helps.
    It's a 7 speed but guess it works in a similar way. There are 4 wires going to the motor, any idea why there are 4?

    Quote Originally Posted by plasma View Post
    climate control has 7 settings and i dont think it has a resistor pack in the usual place.

    FI23 (fuse box left hand side of dash with door open 40amp) is the main power feed for it.
    The regulator for it appears not to in the standard aircon position but further up to the left near the door pillar. Looks like a glovebox out jobbie to see it.

    FI2 (7.5amp) is the power feed to the aircon switch unit, does this work and show which speed its trying to work at on the display screen?
    Forgot to say I did check those fuses, all ok. The display works ok and displays the speed. However pressing the Auto button no longer illuminates the led.

    I put my multimeter randomly across the motor wires and there was a contant 12v on 2 of them, and a varying voltage (as you adjust the speed) across another 2. This would suggest to me that the motor is knackered. But the garage that my dad took the car to for its Mot said they tested the fan and it was ok.

    Does anyone have a wiring digram? If I can figure out what each wire does that goes to the blower I can test it for myself.

    Thanks again.

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